APA (7e ed.) Bronvermelding

Widicus, W. W., & Stitzel, T. E. (1980). Personal investing (3rd ed.). Irwin.

Chicago (17e ed.) Bronvermelding

Widicus, Wilbur W., en Thomas E. Stitzel. Personal Investing. 3rd ed. Homewood, Ill: Irwin, 1980.

MLA (9e ed.) Bronvermelding

Widicus, Wilbur W., en Thomas E. Stitzel. Personal Investing. 3rd ed. Irwin, 1980.